When can I plant Sweet Peas in Zone 8a

One of the first steps we take when we are determining our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A common way of figuring out when it's possible to plant sweet peas is to look at the USDA zone info for Zone 8a.


Planting Calendar for Sweet Peas

Frost tolerance for sweet peas: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

Since sweet peas are one of those plants that can tolerate a tiny bit of cold weather you can plant them just a tiny bit earlier in the year than more sensitive plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant sweet peas
Possibly ok, but a risky time to plant sweet peas
Probably not a good time to plant sweet peas

The earliest that you can plant sweet peas in Zone 8a is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant sweet peas and expect a good harvest is probably August. You probably don't want to wait any later than that or else your sweet peas may not have a chance to really do well. Starting your sweet peas indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Zone 8a the average date of last frost happens on March 15. In the coldest months of winter we can expect an average low temperature of 10°F.

Since the USDA zone info for Zone 8a may not be accurate from year to year our actual date of last frost is different every year. Half of the time in Zone 8a it frosts late in the year after March 15 so just be sure to be ready to protect your sweet peas in the event of a surprise late frost.

USDA Zone Info for Zone 8a

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low10°F
Highest Expected Low15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Zone 8a

You may be interested in our other planting guides for Zone 8a.